Heater



c. A. M-OORE.

' I APPLICATION F Ii EL S E FT- I9, 1918.- '1,352,676 Patented Sept. 14,1920.

3 SHEETS-SHEET I- C. A. MOORE.-

HEATER.

APPLICATION FILED SEPT. 19, I918- Patentd Sept. 14, 1920.

3 SHEETS-SHEET 2.

H i9 fnum'Jor Yes a/ffaore fliornex C. A. MOORE.

' HEATER.

APPLICATION map SEPT. 19, 1918 1,352,676. f PatentedSept. 14, 1920.

' I v 3 SHEETSSHEET a.

UNITED STATES PFAT'ENTIOFFFVI CHARLES A. MOORE, OF STQPAUL,lltIIIil'll'IESOTA.

HEATER.

Specification of Letters Patent. Patented Sept. 14, 1920.

Application filed September 19,1918. Serial No. 254,869.

which is adapted for use in preserving andripening bananas and for otherpurposes. The primary object of this invention as to provide a heater,which will maintain the propentemperature in banana rooms for carryingout the process of curlng and ri ening bananas. a

ith these and other ob'ects in v1ew my invention comprises the eaturesof con- "struction and combination of parts herein after moreparticularly described In the accompanying drawings forming part of thisspecification, Figure 1 is a vertical section of my invention taken onthe upper and lower ends.

line X-X of Fig. 2 ;.Fig. 2 is a vertical section taken on the line Y-Yof Fig. 1; Fig. 3 is a cross section taken on the line Z--Z of Fig. 1;Fig. 4 is a typical section of. a

banana room showin my improved heater therein and the circ ation of airproduced by said heater, and Figs. 5 and 6 arejsections of details ofalternative constructions of my'invention. y

In the drawn: let A indicate an outer casing in which is arranged a pairof vertical ducts. or pipes 2 and 3, the upper'portions of which arerespectively surrounded by heating drums 4 and 5, the'drum 4 beingclosed at its upper end and open at its lower end, and the drum 5 beinclosed at both its he wall 6 which closes the lower end of the drum 5forms a 'horizontal partition across the entire outer casing A and restsupon the ledge or shoulder 7, which is mounted upon the lower section 8of the wall for-min the outer casing A. The upper section 9 o the wallforming the outer casing A is secured to the partition. 6 and is alsosupported uponthe ledge 7. The duct 3 .is secured to the partition 6 andits lower end depends downwardly and terminates near the lower portionof the chamber formed by the ouiier casing A.

Immediatel below the closed lower end of the duct 2 1s a burner B, whichis mounted upon the stand 10, the lowerend of said stand resting uponthe floor 11 of the lower portion of the outer casin This burner whichmay be of any suita le form generates heat which is adapted to warm airin the lower end of the duct 2, the heated air rising through the spaceintervening be-' tween the wall of the duct 2 and the wall 4 of the drumsurrounding the same. The lower end of the duct 2 is provided with threebranches 11, 12 and 13, the branch 11" leading through the wall of thecasing A and being. adapted to admit outside fresh alr which passesupwardly through the duct 2 and is heated b the walls of the latter. Theouter end 0 the branch 12 extends through the wall of the outer casingbut is closed. The branch 13 also extends through" the outer wall of thecasing and is closed by the removable stopper 14 which provides access-to the interior of duct 2. Theupper end of the duct 2 opens into thespace above the heater and is provided with a damper 15, by which theamount of heated air passin upwardly through the duct is regulate Thedrums-4 and 5are connected at their upper ends by the passage 16 and themedian portion of the duct 3 inside the drum 5 Y is perforated at 17,whereby heated air and products of combustion rising from the burner Bare adapted to pass upwardly through the drum 4, thence through thepassage 16 and down throughthe drum 5 and through the perforations 17intothe duct 3 from whence they ariseupw-ardly and are adapted to passto the outer atmosphere. The upper end of the duct 3 is provided with adamper 18' which regulatesor checks the current of air and gases risingthrough the duct 3. The lower portion or section of the casing A has itsvertical walls'provided with a pair of oppositely disposed openings 19and 20, which are covered by guards21 of reticulated material, andthrough which vitiated air is adapted .to pass freely into the lower endof the duct 3 and to'the burner B." The amount of vitiated air enteringthe duct 3 mayalso be regulated by turping the I damper 22.

The heating drums 4 and 5 are'spaced inwardly from the wall of the outercasing A, the intervening space forming a vaporizing chamber and 3adapted to-contain water or other liquid for that purpose, which isheated b the walls of the drums 4 and 5. .An over ow pipe 23 mounted inthe support 22 carried by the outer casing A and in the partition 6passes downwardly and the burner B, said pan being filled with liquid bythe pipe 26 passing through the end of the branch 12 and connected withthe lower end of the water chamber within the outer casing A, said pipecontaining a valve 27, which is adapted to open, close or regulate thepassagetherethrough. A suitable drain 28 extending down from the waterchamber has its lower end terminating above the overflow pan 24:, but isclosed by the valve 29.

In use my improved heater is placed in the room containingbananas to beripened,

- which for illustration is represented by C in Fig. 4, the bananasbeing hungin this room for preserving, curing and ripening. Preferablyalthough not necessarily a wall 30 is constructed acrossan end of saidroom to produce compartment E and provided with an air inlet 31 intocompartment E for vitiated air ofreduced temperature near its lowerportion and aduct 32 for moist warm fresh air near its upper endentering the room C from above the heater. My improved heater D as.above described is placed in the chamber E and a pipe 33 connected withthe opening 11 extends from the heater through the outside wall of theroom and admits fresh air from the outside into the heater. This freshair passes upwardly through the duct-2 and enters the'top portion of theheater chamber adjacent the outlet 32, so that the pure air, which isheated is admitted into and circulates throughout the upper portion ofthe room. The smoke and gases from the burner B are conducted from theheater after passing through the heating drums Land 5 to the outeratmosphere through. the smoke pipe 35, which is connected with the upperend of the duct 3 and passed outwardly from the banana room. The coldvitiated air from the room is drawn outwardly through the opening heatertogether with the temperature of the of humidity in the air, water isadmitted by opening the valve 27 into the pan 25. By the use of myimproved heater the temperature and humidity of the air in the bananaroom can be maintained, so as to most effectively preserveycure andripen bananas contained in the room.

In the alternative construction shown in Fig. 5, the heater element isin the form of a steam coil 37, placed above the floor in the verticalduct or compartment 2 and is adapted to be used for heating the airwhich passes upwardly from the outer atmosphere through duct 2; Thevitiated cold air in this construction is drawn into the chamber withinthe outer casing A through the screened openings 19 and 20'and conductedto the outer atmosphere through the exit duct 3, and is also conductedfrom the floor upwardly through duct 3 alone. In Fig. 6 the heatingelement 38 is electrically operated in the same manner as the steamheating element, that is the circulation of humid air and of vitiatedair and gases is substantially the same.

. In accordance with the patent statutes, I have described theprinciples of operation of my invention, together with the apparatuswhich I now consider to represent the best embodiment thereof, but Idesire to have it understood that the construction shown is onlyillustrative, and that the invention can ing, in combination, an outercasing open at its upper and lower ends and having a transversepartition forming upper and lower compartments, upright ducts extendin'gabove and below said partition, the first being open at itsupper andclosed at its lower ends and the second open at its upper and lowerends, a burner arranged to heat the lower closed end of said first duct,heating drums surrounding said ducts and connected at their upper ends,the first drum adjacent to said burner being open to admit draft fromsaid burner, and said second duct being perforated to admit draft fromthe lower portion of the second drum into said second duct, said drumsbeing spaced from the inner wall of said outer casing to form avaporizing water compartment above said partition, an overflow passageleading downwardly from the upper portion of said water compartment intothe .lower portion of the space within said casing, a pan below thelower end of said overflow passage, an evaporating water pan in thelower portion of. said first duct immediately above said burner, valvedmeans for admitting liquid from said water compartment into one of saldpans, and dampers 1n said ducts; whereby outside fresh air is warmed andmoistened and passed upwardly into the space above said first ductoutside said heater, vitiate'd air is admitted into said first drum andwith the smoke and gases passed through said second drum and duct to theouter atmosphere, and air passing over said water compartment isadditionally moistened. I I

2. In combination with a banana room having a heater compartment formedwith passages in its upper and lower portions entering said room for thecirculation of air, a heater in said compartment, comprising, an outercasing open at its upper and lower ends and having a horizontalpartition separating the space in said casing into a water compartmentin i upper portion and an air receiving chamber in its lower portion,upright ducts extending above and below the water space in said casing,the upper end of the first of said ducts extending upwardly and openinginto the upper portion of said heater chamber and its lower endadmitting fresh air from the exterior of said heating chamber and room,a burner arranged below the lower end of said first duct to heat the,walls thereof, heating drums surrounding said ducts and connected attheir upper ends, said second duct being perforated to admit draftpassing from said burner upwardly and then downwardly through said drumsand into said second duct, said second duct passing upwardly to theexterior of said room to expel smoke and gases to the outer atmosphere,said burner being adapted to draw vitiated air-from said room and expelthe same with said smoke and gases to theouter atmosphere, the water insaid water compartment being heated by the walls of said drums and thevapor arising therefrom being conducted upwardly into said room andhumidifying the atmosphere therein. 7

3. A heater of the class set forth, comprising, in combination an outercasing open at its lower and upper ends, a jacketed inlet duct in said,casing having its upper end opening into a space to be ventilated andits lower end opening to the .outer atmosphereito admit fresh air intothe lower end ofthe duct, said outer casingbeing formed with a waterreservoir surrounding the jacket of the duct so that liquid placed inthe reservoir may be heated by the jacket and vaporized, and a heatingelement associated with the lower end of said duct for heating the airpassing upwardly through the duct, said jacket having an outlet throughwhich air entering the lower end of said casing and passing upwardlythrough the jacket may escape, whereby outside fresh air is warmed andmoistened and will pass upwardly above said inlet duct, and vitiated airis admitted into the drum and is expelled to the outer atmosphere.

43A body structure forminga provlsion chamber, a draft duct forming acommunication between the outside atmosphere near the upper portion ofsaid body structure and the lower portion of said chamber, asecond draftduct forming a communication between the outside atmosphere near thelower portion of said body structure and the upper portion of'said'chamber, a heating element associated with said second duct to heat theair passing upwardly therethrough and a liquid reservoir associated withsaid parts to be heated by said heating element,

whereby the air admitted into the provision chamber from the outsideatmosphere is humidified and circulated through said provisionchamber'and the vitiated air from, near the lower portion of theprovision chamber is expelled to the outer atmos= phere. p

In testimony whereof, I have signed my name to this specification.

I CHARLES A; MOORE.

